Backwater floor drain



Jan. 22, 1929.. 1,699,871

- E. W. N. BOOSEY BACK WATER FLOOR DRAIN Filed July 11, 1928 INVENTOR.

A TTORNEY.

Patented Jan. 22, 1929.

nnwann W. n. noosnr on DETROIT, nionrenn.

BAGKWATER FLOOR DRAIN.

I Application filed July 11,

This invention relates to backwater floor drains and the object of theinvention to provide a floor drain which will stop water from backing upthrough the drain onto the floor oi the building in which the drain isinstalled. 1

Another object of the invention is to provide a floor drain which may bereadily cleaned out and which is provided with an inlet valve adapted toautomatically close against back pressure and against back water flow. v

Another object of the invention is to provide a floor drain having aflange on which the drain plate is supported the flange being arrangedto catch any seepage around the d 'ain plate and carry it into thedrain.

Another object of the invention is to provide a back water floor drainhaving an inlet valve adapted to be threaded into position in the draininlet and being readily removable to allow cleaning of the drain.

These objects and the several novel features of the invention arehereinafter more fully described and claimed and the preferred form ofconstruction by which these objects are attained is shown in theaccompanyingd awings in which Fig. 1 is a section through a back waterfloor drainembodying my invention.

Fig.2 is a plan view of the inlet valve and seat member.

The device consists oil a U shaped body portion 1 shown in 1 lg. landhaving an outlet 2. The body or trap 1 is provided with a cleanout plug3 above the outlet and a peripheral flange 4!: is cast integrally withthe upper end oi the body pi'irl'ion 1 and extends upwardly at an angleat the outeredge as shown in Fig. 1. A valve member 5 is threaded intothe inlet end of the body portion 1 and is provided with a valve seat 6against which the valve 7 normally seats by gravity. I The valve 7 ispivotally secured to an arm 8 which is pivotally mountedbetween the lugs9 on the valve member 5 as shown in Fig. 2. Theselugs 9 as will be notedfrom 1 are within the circumt'erence of the member 5 so that the valvemember 5 and the valve 7 may be inserted through the threaded flange 10in the inlet 14 and threaded into position. j This arrange ment allowsthe valvemember and valve to be 1928. Serial No. 291,897.

removed at any time for cleaning out the inlet side of the trap or bodyportion 1 andthe clean-out plug 3 may be removed for cleaning out theoutlet side of the trap. As will be noted from Fig. 1 an annular member11 is ecured to the flange at by the screws 16 and is of smallerdiameter than the said flange. This member 11 is provided with aradially corrugated lower edge 12 and at the upper edge supports a drainplate 13 which may be cast integrally therewith or made separately asshown and together with the member 11 encloses the inlet lsaandclean-out plug 3.

This device set into a floor with the drain plate flush with the floorlevel. Any seepage between the annular member 11 and the tioorsurrounding the said member is caught by the flange 1 and passes throughthe corrugations 12 in the lower edge of the. member 11 and into theinlet opening 14.

The ordinary drainage passes through the drain plate 13 and through theinlet 1% into the valve member 5. This flow swings the valve 7 oil fromits seat so that the drainage will pass into the-trap 1, the trap 1being formed on a long are at 15 so that there is no opportunity formatter to collect below the.

valve 7. The water normally remains in the trap 1 at about the levelshownin Fig. 1 forming an ellective seal. Should the water attempt toback up through the drain it more firmly seats the valve 1 against itsseat 6 and prevents the water *lrom backing up through the floor drainonto the floor. The valve '1" also prevents back pressiiire by gas orair. asthis type of back pressure also more lirmly seats the valve 7 andat the same time the valve free to open as the drainage passes into thetrap through the'inlet. The valve 7 and member 5 are so arranged thatthe drainage enters the body of the trap at less than a right angle andabove the water level therein and thus the Having thus i'ully describedmy invention, 7

its utility and mode of operation, what I claim and desire to secure byLetters Patent of the United States is 1. A backwater floor draincomprising a hollow Usl1aped body member having an integral flange atthe upper end, the body men1- her being provided with an inlet openingatan angle through the saidflange into thebo'dy member, a valve memberthreaded into the inlet, a valve pivotally supported on the valve memberwithin the inlet and adapted to normally close the inlet by gravity, thesaid valve being adapted to open upon'flow of drainage therethrough, thesaid valve memher and valve being removable from the inlet to allowcleaning of the body member, a clean-out plug in the o )pos1te end ofthe body member, auoutlet opening from the body member beneath the saidflange, an annular member of smaller diameter than the flange andhavinga corrugated lower edge resting on the said'flange and a perforate drainplate carried bythe said annular member.

A back water floordrain comprising a -hollow Ushaped body member havingan integral flange atthe upper end, the body member being provided withan inlet opening at an angle throughthesaid flange and into the sideWall of the body member, avalve member threaded into theinlet andcarrying an inlet valve normally closing by gravity, a cleanout plug inthe endof the body member opposite the inlet, anoutlet opening from thebody member beneaththe said flange, an annular member of smallerdiameter than the flange having a corrugated lower edge resting on thesaid flange, the annular member extending about the inlet and clean-outplug, and a perforate drain plate supported in the upper edgeof theannular member, the drain plate being readilyremovable to allow accessto the inlet and clean-out plug.

3. A back water floor drain comprising a hollow U shaped body memberhaving an integral flange formed about the upper end thereof providedwith an. upturned periipheral edge, an annular member positioned on thesaid flange within the peripheral edge having a corrugated lower edgethrough which seepage is adapted to pass into the drain, a drain platecarried by the sald annular member, an inlet opening at an angle throughthe said flange into the body member, a valve member threaded into thesaid inlet, a valve carried thereby normally closingthe inlet butadapted to open upon flow of drainage therethrough, an outlet openingfrom the U shaped member opposite the inletand a cleanout plug threadedinto the U shaped member above the outlet. V

4. A back water floor drain comprising a hollow U shaped bodymemberhaving an outlet in one side thereof and an angular inlet in theoppositcside thereof, the body member being provided with an integralflange about let and an outlet adjacent the opposite ends thereof,aaflange formed integrally with the body member, an annular member havinga corrugated lower edge seating on the said flange, a valve memberthreaded into the inlet, an inlet valvesupported by the valve memberwithin the inlet and normally closing by gravity, the valve beingadapted to open by flow therethrough into the bodymemher and adapted toclose upon flow in the 0pposite direction.

6. A back water floor drain comprising a hollow U shaped body memberhaving an outlet in one side thereof and an angular inlet in theopposite side thereof, the body member being providedwitha flange formedintegrally with the upper edge thereof, the angular inlet openingthrough thetsaid flange, a clean-out plug threaded into the body memberadjacent the outlet andan annular member carrying a perforate drainplate adapted to be positioned on the said flange to enclose the inletand clean-out plug.

7. A back water floor drain comprising a trap of substantially U, shapehaving an outlet on one side and inletopening on the other, a tubularmember secured in the inletto extend into the trap, a swing checkvalveat the inner endof thetubular member on a line substantially in avertical plane adaptedvto close the inlet by back flow of fluid inthetrap, said parts being arranged with the check valve above the normallevel of water in the trap, a flange at the upper end of the trap, ahollow body secured thereon having an open upper end, a. grating for thesaid open and, the said hollowbody and grating providing an inletchamber discharging to the trap through the tubular member.

8. A backwater floor drain comprising a trap of substantially U shapehaving an outlet on one of its sides and an inlet opening on theother, achambered body above the trap inlet having an opening to receive fluid,a grating coveringthe opening, a tubular member into which the fluid is.discharged from the chambered body, a swing check valve on the dischargeend of the tubular member lying substantiallyin a vertical plane and p0-being a Wall integral with the trap extending across the upper end ofthe inlet leg, said Wall having a threaclecl aperture, a tubular meniberextending into the leg and supported in the said opening, a swing checkvalve at the inner end of the tubular member closable by back flow tothe trap, a chamber above the trap having substantially vertical walls,the

said tubular member providing a discharge outlet for the chamber, and agrating provlchng a cover for the chamber through which fimclmay bechsch argecl theremto.

tion.

EDWVARD WV. N. BOOSEY.

In testimony whereof I sign this specifica-

